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Multilayered deep-drawn foil, and deep-freeze-withstanding deep-drawn vacuum packaging
Multilayered deep-drawn foil, and deep-freeze-withstanding deep-drawn vacuum packaging
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机译:多层深拉箔和可承受深冻的深拉真空包装
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摘要
1. Use of a multilayered co-extruded composite film (1') having two external layers (A, A') which correspond with regard to material and thickness and which comprise linear polyethylene or high-density polyethylene (low-pressure polyethylene, HDPE) and having two internal layers (B, B') which correspond with regard to material and thickness and which comprise an ethylene/methacrylic acid copolymer cross-linked with metal ions or an ethylene/vinyl acetate copolymer, in which film the external layers (A, A') are connected to the internal layers (B, B') by melt-bonding and the internal layers (B, B') are connected to one another by blocking, as self-supporting deepdrawn film, especially as film for the bottom part in the manufacture of deep-freeze-resistant vacuum deep-drawn packaging or vacuum deep-drawn packaging for sharp-edged packaged goods.
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